Lawn sprinkler



Aug. 27, 1929. P. IRVING EZT AL LAWN PRINKLER 2 Sheets-Sheet 1 Filed May 11. 1928 gmmtou P/I/Wp firing Dar "a" t. L/haqu/Jf Smruw/ f. 05677. Oscar 5. 17 6 6 1 I, I v w I Aug. 27, 19291 P. I I QVING ET AL LAWN SPRINKLER Filed May 11. 1928 2 Sheets-Sheet 2 the sprinkler.

Patented Aug. 27, 1929a UNITED STATES I 1,726,490 PATENT OFFICE. I

PHILIP IRVING, DAVID E. LINDQUIST,'SAMUEL E. EUSEY, AND OSCAR B. MUELLER, OF

IPORT HURON, MICHIGAN, ASSIGNORS TO MUELLER BRASS CO., MICHIGAN, A CORPORATION OF MICHIGAN.

OF PORT HURON,

LAWN. srmnxmn.

Application filed amp, 1928. Serial No. 277,041.

The present invention relates to a lawn sprinkler, and is more particularly adapted for use where a plurality "of automatic sprinklers are employed for watering a large area.

5' The invention contemplates a-simple construction, wherein the spray member is projected under pressure of the water in the system, and upon the removal of the pres.

sure, returns to position and seals the top of The invention further employes an adjustable coupling whereby the device may be positioned fiush with the level of the ground, and raised or lowered to conform to the sur- 115 face, as the level thereof may vary.

The device is moreover non-clogging, and by reason of the connection with the main, it is unnecessary to provide any elaborate, or complicated means of adjustment, so that once installed, the invention need not be removed from the ground.

Referring to the drawings:

Figure 1 is a longitudinal section. g

' Figure 2 'is a section on the line 22 of Figure 9 is a sectional view. y In the drawings, the numeral 1 indicates one pipe of my coupling, which is suitabl attached to the usual supply main, as W11 be described. The numeral 2 indicates a housing which may have any desired sha e, but is preferably a hollow cylinder an threaded to thepipe 1 as shown. It will be understood that usually e embedded in the ground, and that the top of the cylinder 2 will preferably be disposed flush with the surface so as not to constitute 'anobstruction for pedestrams, or machinery moving over the lawn.

The cylinder 2, at its upper end is reduced by being cut away'on -op oslte sides to provide angular flat side an bottom walls ind cated-at' 3, and 4, respectively- The ob ect the coupling, as well as the housing, wil

2f this is to provide a wrench engaging sur-v ace.

The diameter of' .the interior of the cyl- 'inder is decreased from adjacent the point 5 at the lower end to adjacent the point 6 at the upper end, and the housing is provided straight central wall 9. It-will be observed that a shallow circular recess or seat 10 is thus defined by the upper bevelled side 8,

and the adjacent wall of the reduced portion 3 of the housing. I

Arranged to slide u and down within the housing is a secon hollow cylinder .11 of less diameter than said housing. .Near its lower end above the solid bottom, the cylinder has formed in its wall one or more openings 12, providing-communication with the interior of the housing 2. The lower end of the cylinder 11, and below the openin 12, is preferably made solid as stated an formed with a screw threaded opening 13; Adjustably mounted. in thev cylinder 11'to move therewith, is a valve or spray member 14. This spray member is provided with a flat, upper surface having a recess 15 therein to receive a screw driver. member comprises a stem formed at a point intermediate its ends with a spider, or guide, 16 and at one end is split and threaded, as

shown at 17. The threaded portion 17 is adapted to be received within the threaded o 'enin 13 in the cylinder 11, and it will be c ear t at by screwing the spray member a greater or less degree, the extent of -'the opening between the conical undersurface 18 of the spray device and the end 19 of the cylinder 11 may be adjusted. 1

The cylinder 11 is provided with an exterior lateral stud or guide '20, which in the assembled device, is adapted to slide within 1 'a longitudinal groove 21 formed in the portion .5, 6 of the housing. The lower end of the move 21 opens. flush with the wall of the ower end of the housing which is of The spray reater diameter than the portion 5, 6, so 7 t at the inner cylinder may easily be assem bled in the housing. I

he said inner c linder is shown as having its wall at the ower end thickened, and

su h portion is defined by the solid bottom 40 v v swaged 1n, as-shown'at 25,- and the interior .wall of the swaged portion is threaded as.

already described, and a bevelled portion 23 i effective results, better balance and is easier.

[stop for-limiting upwardmovement of the ylinder'by engaging said bevelled side-8 as;

shown at 23 in the drawings. I

The upper part of the wall of-the cylinder is reduced in thickness from the said bevelled ortion 22. g

The gu1de20, openings- 12 and the thread ed connection between the spray device and cylinder are all 'in the thickenedportion. Of course, the wall of the cylinder need not be so thickened,- in which eventa suitable ring or'band having a bevelled portion corresponding to the bevel 22 may beformed integral with or connected to the. cylinder, and they guide .20 may be formed on the lower part of said band or at an appropriate j positionon the cylinder.- We prefer, however, the construction shown as it gives to machine and assemble.

As stated the diameterof the inner cylinder is less than that of the housing and, consequently, a space or water passage is formed between the two members in the assembled structure so that water entering the housing'may passwith increased force into the inner cylinder through the openings 12; a

Referring to Figures 5 and 6, itwill be .noted that the pipe 1 which'is connected to the cylinder 2 and'communicates therewith, is also connected to a second pipe 24.

The pipe 24 is threaded at its lower end and is connected to any suitable source of water, such as an underground main. The said pipe 24, at a point intermediate'its ends, is

at 26. The pipe l'is preferably'formed with a" considerable number of screw threads at its lower end, as at 27, so that said plge,

j carrying the sprinkler and threaded .in t

pipe 24 may be readily adjusted within said vpipe and with respect to the ground surface. This, of course, is permitted by the threaded relation between'the threads 27 on the pi el and the threads 26 on the interior o the swaged' wall 25.

so that the projection 20,

Instead of having the pi e .1 provided with. a long exterior threa' ed portion, it may, of course, have a short threaded enlargement corresponding to the threaded portion 26 and the pipe 24 may then be threaded for the major portion of its length. Moreover, either "construction may be employed and the pipe-1 interiorly threaded to receive the ipe 24, which, of course, will be exteriorlyt readed. I 7

In assembling the device, the, cylinder 11 is inserted in'the bottom of the housin 2,

may slip into Iace' in the groove 21.- The spra device-114' is. then inserted in the .top of t e cylinder 11 and by reason of the guide 116, will be brought into alignment with the threaded opemng 13 in thebottom of the-cylinder 11, 7

whence it may then 'be' threaded in said openin .to the desired extent,,de5ending upon t e size of the spreiy desire The housing may then be threa ed to the pipe 1 which communicates with the main ashere 7 5 pressure'is ofi,the inner cylinder 11 will be -30 in lowered position with the spray member occupying the bevelled recess orseat 10, formed in the upper end. of the housing. In this position, the spray member will be the sole means of vertical sup ort for the inner s5 cylinder. It will be un erstood that the spraymcmber when seated within the recess 10,'w-1]l have its upper surface flush with the upper end of the housing 2, and that con'seguently a smooth continuous top is pro'vi ed conforming to the groundlevel. When the pressure is -turned on the water will strike-the flat bottom wall of the inner] cylinder and by reason of the narrow passage about the inner cylinder will be'caused to enter the openings 12 with increased force and exert a pressure upon the spraymember. In this manner, the inner cylinder will be forced upwardly, and since the spray mem- I ber will beunseated, the water will pass onto the law in the desired manner. The bevel 22 will be caused to contact with the lower bevel 8 on the housing as shown as 23 to provide a stop for the cylinder as well as form a tight leak-proof joint. I

When the cylinder will,-of course, fall and the spray member 14 will be seated in the recess 10 with its conical portion 18 restin on the upper bevelled portion 8 of the pro ection 7. This 1 b 3 provides a non-clogging joint which is necessary with automatic sprmklers of this charv acter.

within thelnrember 24 to raise or 'lower the 'upper surface'of the sprinkler.

I have as a w ole at 28 between the pipe -1 and the fired member 24 so as to'prevent any possibility'of leakage. v. I e

In Figure 8, -,we have shown a modified ray, this,

form v of sprinkler-head in which the top of 130 pressure is'turned ofi, the inner:

yturmngna I I y a-wrench to the wrench, en- 20 provided a packed joint'indicated the cylinder 11 is cut away for a portion of its periphery as shown at 29. The depth of the cut is substantially 1;, but, of course, it may be greater or less, as desired. The extent of the cut is preferably less than the entire circumference of the cylinder 11 and is usually 90 or 180. The purpose of such construction is to provide for s raying along theedge of a sidewalk or bui din and, in some cases, along the side of a gol green.

It will be understood that with this construction, the tapered portion 19 will rest upon the uncut portion of the periphery of the cylinder which can be accomplished by screwing the stem an appropriate distance into the bottom of the cylinder, so that when the cylinder is projected, the water will pass out through the space provided by the cut away portion and the adjacent beveled surface of the spray member.

The guide 20 and groove 21 are particu-- larly employed where the construction shown in Figure 5 is found necessar since, by this construction, it will be possible to properly position the device so that the s ray may be directed away from a wall or si e.

It will be understotod that in other cases the groove and uide are not necessary, but they are shown 1n the drawing, in order to fully illustrate the invention and its modifications.

In Figure 9, we have shown a construction wherein the spider or guide 16 may be eliminated. For this purpose, the'threaded portion 17 is shortened and the threads in the bore 13 may be similarly reduced, as shown, It is not essential that the threaded portion 13 may be reduced,.but it will be satisfactory in some cases. With such a construction, when the threaded portion 17 is engaged in the bottom of a cylinder, a portion of the solid part of the stem will engage in the bore or opening, whether it be threaded or not and in this manner the stem will be suitably positioned, so as to be guided or jou1. nalled in the cylinder;

We claim 1. A device of the class described comprising a housing, a hollow projectable s ray member disposed therein, said member iaving an intermediate flange engaging an internal flange on the housing to limit the movement of said member, one end of the spray member being closed to form a solid piston portion spaced from the wall of the housing, lateral openings formed in the spray member above sa1d piston portion and establishing communicatlon between said housing and saidmember and a spray device adjustably mounted in the closed end of said spray member.

2. A device of the class described comprising a housing, a hollow water projectable spray member movable therein, the said housing having a reduced upper end, an internal flange formed in said reduced portion and oppositely bevelled to provide seats, said spray member having an intermediate bevelled enlargement engaging one of said seats and having one end closed, lateral openings formed in said spray member between said enlargement and the closed end .of the member, a spray device having one end threaded in the closed end of the s ay member, said spray device beingforme with an intermediate spider engaging the wall of the spray member, and the opposite end of said spray device being formed with a conical valve engaging the other of sa1d seats when the spray member is in retracted position.

In testimony whereof we have hereunto set our hands. 7

- PHILIP IRVING.

DAVID E. LINDQUIST. SAMUEL E. EUSEY. OSCAR B. MUELLER. 

